Analysis: Trump - Iran - Abe (Guardian)
... In the wake of US abrogation of the 2015 nuclear deal with Tehran, and its attempt to pressure the rest of the world to follow suit, Iran expected China and at least a few of their other oil customers to defy the US oil embargo. That has not happened so far. Rouhani met Xi Jinping in Kyrgyzstan on Friday to get a clear idea of Chinese intentions, but Xi seems to have remained non-committal.
Meanwhile, the European mechanism that was supposed to insulate the trade in basic humanitarian supplies from US sanctions has yet to get off the ground and may never fly.
Faced with economic strangulation, Tehran has less and less to lose. Whether it was behind the tanker attacks or not, it had signalled its intention to make the rest of the world pay some of the price for US brinksmanship. The message from Iranian officials over the past two months has been that, if Iran could not export its oil through the Gulf, nor should other nations. Tehran has also slapped down a nuclear ultimatum. If sanctions pressures are not significantly eased by 8 July, it will throw off some of the shackles of the 2015 nuclear deal, most importantly by raising the level at which it enriches uranium. That will ring alarm bells around the world, by cutting the time Iran would need to make a bomb.
Trump now appears to realise that the train he boarded is not heading to a glorious summit, but a potentially devastating conflict in the Gulf, and that some of his own officials, notably the national security adviser, John Bolton, are quite content enthusiastic, even to keep driving in that direction...
https://www.theguardian.com/world/2019/jun/14/shinzo-abe-iran-ayatollah-talks-analysis-trump